avclub-4b106d8520d124029ee602ce1629fdec--disqus
grnpointer
avclub-4b106d8520d124029ee602ce1629fdec--disqus

It appears to be a city bus, not a school bus (which are not that common for high schoolers in NYC).  It's possible they're just hanging out on the bus rather than going home (which is totally common for high schoolers in NYC).